allison



J. H. ALLISON.

FLUE CUTTER.

APPLICATION FILED 001. 26. ms.

1,320,521 Patented Nov. 4, 1919;

2 SHEETS-SHEET lkw m 3'. H. ALLISON.

FLUE CUTTER.

APPLICATION FILED OCT. 26. 191B.

Patented Nov. 4, 1919. r

2 SHEETS-SHEET 2- r lll ll" reversely positioned UNETEE TATE PATENT @FFEQE.

JESSE H. ALLISON, OF CHICAGO, ILLINOIS.

ELITE-CUTTER.

Application filed October 26, 1918.

To all whom it may concern.

Be it known that 1, Jesse H. ALLISON, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain Improvements in Flue-Cutters; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

Thi invention relates to improvements in flue cutting devices.

In carrying out the invention it is my purpose to produce an extremely simple, novel and cheap flue cutter of strong, substantial construction wherein the cutting element will act positively upon the flue to sever the same with the least amount of physical exertion by the operator.

It is a still further object of the invention to produce a flue cutting device wherein the cutting element is interchangeable and also wherein the said cutting element may be upon the stock of the device whereby to cut a flue when the said stock is turned in either direction, thus permitting the tool accommodating itself to either right or left hand operators.

It is a still further object of the invention to produce a flue cutting device wherein the cutting element will be normally fitted in a suitable slot provided therefor in the stock of the tool so that the tool can be readily inserted within the flue, but which cutting element will ride upon one of the walls of the slot, when the stock is rotated so as to automatically project itself therefrom into cutting engagement with the flue, when the stock is turned in one direction and where by the said cutting element will again automatically position itself within its slot when the stock is moved in another or non-cutting direction.

It is a further object of the invention to produce a flue cutting tool wherein the cutting element will be self-projecting when the tool is operated in a cutting direction, and wherein the said cutting element is self-sustaining and does not depend upon separate parts for being projected from the slot or being returned to its slot after the flue has been out.

It is a still further object of the inven- Specification of Letters Patent.

' by the Patented Nov. 4:, 1919.

Serial No. 259,785.

tion to produce a flue cutter having a removable cutting element which is slidably held between projecting arms of the stock.

With the above and other objects in view the improvement resides in the construction, combination and arrangement of parts set forth in the following specification and falling within the scope of the appended claims.

On the drawings:

Figure 1 is a side elevation of a fine cutting tool constructed in accordance with the present invention.

Fig. 2 is a transverse sectional view on the line 2-2 of Fig. 1, illustrating the arrangement of part when the device is inserted in a flue the flue being shown also in section.

Fig. 3 is a similar sectional view but illustrating the arrangement of the cutting element when the tool is rotated in a cutting direction.

Fig. i is a longitudinal sectional view on the line i4= of Fig. 2, omitting the flue.

Fig. 5 is a perspective view of the stock.

Fig. 6 is a similar view of the filler block.

Fig. 7 is a top view of the cutting element.

Fig. 8 is a side view of the cutting element.

Fig. 9 is a perspective view of a modification.

Fig. 10 is a longitudinal sectional view approximately on the line 1010 of Fig. 9.

Fig. 11 is a transverse sectional view approximately on the line 1111 of Fig. 10.

As shown in the drawings:

Referring to Figs. 1 to 8 inclusive, the numeral 1 designates the stock or spindle of the improvement, which stock has its outer end provided with a preferably square head 2, for wrench connection, or whereby the stock may be received in the socket member of a turnable element, such as the chuck of a brace. The stock 1 has its body 3 rounded in cross section, and is formed with an annular flange a between the said body and the head 2. lhe body 3, from the end thereof, is formed with a longitudinal slot or opening 5, one of the walls of the opening being straight, as indicated by the numeral 6, and the other wall is rounded inwardly toward the said straight wall, as indicated numeral 7 The rounded wall provides a fulcrum surface for the cutting memher as will hereinafter be more fully described and apparent. The bifurcated or slotted end of the body 3 of the stock is provided with spaced alining preferably threaded openings 8-S whereby to receive threaded securing elements 10 that are adapted to retain a fillerblock 9 within .the slot 5. The filler block, as disclosed'by the drawings, has its outer sides rounded to conform to the rounded cross sectional forma tion of the body 3, and one of the side walls or facesof the said filler block is straight to engage with the straight abutment wall 6, the Opposite wall being concaved to engage with the rounded wall 7 of the stock 3.

The securing elements 10 are preferably in the nature of headless bolts and pass through threaded openings 11 in the filler block, and these members 10 not only serve to retain the filler block upon the stock but also to prevent the outward spreading of what may be termed the arms at the opposite sides of the opening 5 in the said stock. The filler block has what may be termed its inner end terminating a slight but suitable distance away from the shoulder 13 which forms the inner wall of the slot or opening 5, and the space between this shoulder 13 and the said inner end of the filler block is approximately equal or slightly greater than the cross sectional diameter of the cutter member 14. The cutter member, as disclosed by the drawings, has one of its edges concaved, as at 15, and this concaved edge is adapted to rest upon the rounded portion 7 of the stock, the opposite edge being beveled from its center to the outer and rounded periphcry of the said cutter member, as indicated by the numerals 1616. The numeral 17 designates the cutting point of the member 14, and by reference to the drawing, it will be noted that the cutter is beveled or rounded from the sides 15 and 16 to provide the said. point, while the opposite edge of the cutter is struck in the arc of a circle to correspond with the rounded periphery of the body 3 of the stock and with the rounded outer side of the filler block 9. It is to be understood that the point 17 of the cutter is I arranged in the stock transverse guide slot formed between theshoulder 13 and the inner end'of the filler block, the said point, however, not projecting sufiiciently to interfere with the free entrance of the stock into a flue 18. The cutter member is freely movable back and forth through the guide slot,

and is of suflicient lengthto permit of the ioint 17 thereof contacting with the inner surface of the flue 18, when" the stock is turned in the direction of the small arrow shown in Fig. 3. This frictional engage- I ment between the point of the cutter and the flue will have a tendency to move the cutter member longitudinally of the slot to permit ofthe'point 17 being projected outwardly of the slot to cut through the flue 18. The conmeral 19, will contact with the flue causing the concaved edge of the cutter to ride over the convex on rounded surface 7 of the slot to seat the cutter member in the slot, and the second beveled edge 16 of the cutter the edge arranged adjacent to the point 17) will contact with the straight wall 6 of the slot (see Fig. 2) when the cutter is fully retracted. When, however, the flue 18 has been entirely severed by the cutter the stock may be turned to bring the slot to a vertical position with the point of the cutter upward,

and a slight shaking of the stock will cause the cutter to be received in the slot at the position illustrated in Fig. 2, the beveled edge 16 adjacent the point of the cutter contacting with the wall 6 will prevent-the said cutter fromsliding out of the slot.

The cutter upon-one or both of the sides thereof is centrally beveled, as at 21, and the depression provided by the bevel forms a pocketfor the reception ofshavings or for the reception of dirt or rust which is removed during the cutting operation, and 'it will be apparent by reference to Fig. 3 of the drawings that the space between the beveled edge 16 adjacent to the cuttingpoint .17 and the straight wall 6 of the stock provides a communication with the said pocket.

In Figs. .9 to 11 the device is substantially similar to that previously described, the body of the stock 22 being centrally slotted from its end, and one of the inner walls provided by the said slot being rounded as at V 23, the opposite wall being beveled in opposite directions to the center thereof, asindicated by the numerals 25, and the arms or members to the opposite sides of the slot are provided with threaded openings which aline with a threaded opening in the body of the filler blockr26." The filler block has its outer sides rounded to conform to the cross sectional contour of the body 22-and has its opposite faces recessed, one of said recessed faces being rounded to engage with the round wall 23 and the other recessed face being beveled inwardly from the said rounded sides to engage with the substantially V shaped wall 25. The body of the filler memher is provided with an opening which may be threaded and which registers with the threaded openings in the arms. arranged to the opposite sides of the slot therein and a headless threaded element engages with the threads of these openings to hold the filler block upon the stock and to prevent the arms of the stock from spreading. The filler block has its outer end formed with a rounded head 27, and the said head is provided with rounded openings 2828 which register with threaded openings in the arms of the stock, while threaded securing elements are received within the said openings, and thus additional means are provided for holding the filler member upon the stock and for preventing the spreading of the arms of the stock. The cutter member 29, is adapted to freely move back and forth through the guide slot provided between the inner end of the filler block and the shoulder provided at the end of the slot in the stock. The cutter is substantially similar to that previously described, except that the same, instead of having one of its sides curved toward its center is straight, as at 29*, while its opposite side is rounded inwardly, as in the structure previously described, and this concaved side is adapted to rest upon the inwardly rounded portion 28 of the pocket within which the cutter is arranged. The operation is substantially similar to that previously described, the point 30 of the cutter engaging with the tubular flue when the stock is turned in one direction and the said cutter being guided outwardly by virtue of such engagement upon the rounded wall of the pocket. WVhen the straight edge of the cutter contacts with one of the beveled walls 25 of the guide slot the outward movement of the cutter with respect to the guide slot will be limited and when the device is operated to permit of the straight edge of the cutter contacting with the second beveled wall :25 of the guide slot or the wall adjacent to the cutting edge of the cutter, the inward movement of the cutter with respect to the guide slot will be limited, and in each instance it will be noted that the peculiar formation of the cutter and the walls of the guide slot prevent the said cutter from being wholly withdrawn from the guide slot.

It is, of course, to be understood that the cutter is arranged in the transverse guide slot before the filler block is secured to the stock, and it will be apparent that the action of the cutter may be reversed by simply turning the cutter member to bring its point to either side of the guide slot.

While I have shown and described my invention in a preferred form, I am aware that various changes and modifications may be made without departing from the principles of my invention, and I therefore do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. In a flue cutter, the combination of a stock having a diametrical opening, and a rocking cutter freely slidable in the direction of its length in the opening.

2. In a flue cutter the combination of a stock having a pair of spaced, longitudinally extending projections, a cutter intermediate of the projections and movable transversely of the stock, and means detachably connecting the projections for retaining the cutter therebetween.

3. In a flue cutter the combination of a stock having a pair of spaced longitudinally extending projections, a cutter intermediate of the projections and adapted to be projected laterally from the stock when said stock is rotated in one direction and to be retracted when the stock is rotated in the other direction, and a member abutting against the outer side of the cutter to retain same between the projections and engaging the projections beyond the cutter to prevent expansion thereof.

4. In a flue cutter the combination of a stock having a transverse opening enlarged at each end, and a cutter loosely engaged in the opening so as to be projected from and then retracted into the opening, said outter being enlarged at each end to lock same against removal from the opening.

5. In a flue cutter the combination of a spindle having an elongated cutter movable transversely of the spindle, and an abut ment wall formed in the spring for pivotally engaging one edge of the cutter and adapted to bear thereagainst to apply the pressure to the cutter to cut the flue.

6. In a flue cutter the combination of a stock having a transverse opening, and a cutter element movable transversely of the stock to and from the operative position, and having a lateral compartment at the side thereof accessible from the cutting end of the cutting element in its operative position to receive the products of the cutting operatlon.

7. In a flue cutter, a stock having a transverse slot, a cutter member in the slot for bodily movement transversely of the stock, said cutter having a point projecting slightly beyond the outer surface of the stock, and disposed to be guided by contact with the walls of the slot to be partly projected through the slot or to be wholly received within the slot.

8. In a flue cutter, a stock having a trans: verse slot extending therethrough, a cutter member arranged for bodily transverse movement through said slot, and said cutter having its point projecting slightly beyond the outer surface of the stock, the body of the said cutting element engaging with the walls of the slot whereby by virtue of such engagement when the stock is turned in one direction and the point is brought to contact with the tube, the cutter will be projected partly through the slot, and when the stock is turned in another direction the body of the cutter will be seated in the slot.

9. In a flue cutter, a stock having a transverse slot therethrough, the top and bottom walls of which being irregularly shaped with respect to each other, and a cutter member arranged for bodily transverse movement through said slot, said cutter having a cutting point projecting slightly from the stock, and the body of the cutter member engaging with the walls of the slot, one of said walls serving as a fulcrum for the said cutter whereby to guide the movement of the cutter with respect to the stock when the point of the cutter is contacted, and the other wall serving as a stop to limit the movement of the cutter.

10. In a flue cutter, a flanged stock having one of its ends slotted longitudinally and "one of the walls provided by the slot being rounded toward the other wall provided by the slot, a filler member closing the outer end of the slot,means for securing the filler memher in the stock, to rigidly sustain the portionsof the stock formed by the slot, said filler member being of a less length than the slot to provide a transverse guide slotbetween the filler member and the end Wall of the slot, and a cutter member in the pocket for bodily movement transversely of the stock, said cutter member having a cutting point projecting slightly from the stock, said cutting member also having a rounded surface to rest upon the rounded wall in the stock.

11. In a flue cutter, a flanged stock having an opening in one of the ends thereof, one of the: Walls provided by the opening being rounded inwardly, a filler block within the opening, means passing transversely through the opening and through the filler for securing the provide a pocket, as and for the purpose set.

forth.

12. In a flue cutter, a stock having a transverse opening, and a cutter member slidably movable in the opening and designed to contact with the walls of said opening, and by virtue of such contact to be permitted to partially project through one side of the stock or be wholly received in the opening' 13. In a flue cutter,a stock having a transverse slot, the opposite walls of which are irregular, a cutter member arranged in the slot for bodily movement transversely of the stock, said cutter member having one of its edges conforming to one of the walls of the slot to be guided by virtue of contact with said wall laterally of the stock. and to be projected from the stock or to be retained in the slot, and the opposite edge of the said cutter member adapted to contact with the second wall of the slot to limit the movement of the cutter member in both of its positions and to retain the cutter in the slot.

In testimony whereof I have hereunto sub.-

scribed my name in the presence of two subscribing witnesses.

. JESSE H. ALLISON.

Witnesses I I LAWRENCE RnIBsTEIN, EARL M. HARDINE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0. 

